HiLetgo 250W DC-DC Module 10-40V to 10-50V 6A Adjustable Step-Up Power Supply Module Constant Voltage Constant Current Power Converter

I connected the boost converter (https://www.amazon.com/dp/B07T137H2Y) to an adjustable power supply module (https://www.amazon.com/dp/B01LWXAC5E) on the output. And I have a Volt/Ammeter (https://www.amazon.com/dp/B072BY4XZ7) on the input. All supplied by a 12V marine deep-cycle battery on the input. It was giving me 24v out from the start. I need 48v so I dialed this boot converter up to 50v, and fine-tune the output using the adjustable module. Been running for 2 weeks 24/7 and it's driving 7watts during the day and 15watts at night. No troubles so far! The output is powering a PoE ethernet hub that as a pair of PoE cameras (https://www.amazon.com/dp/B07V1WKRBB). It's all working really well! Once I'm done will the cameras, this will be my workbench power supply.

Not even close to 250w! Good power supply and the proper settings on the PSU with CV and amps set to maximum for the load draw which was a 165w smart charger. Got maybe 43w and thought the device was faulty. Started poking around and noticed really bad solder pads and flux burns allover the board. The inductor coil silicon on one of the boards was dangling off after shipping and that one has so much noise I threw it away in fear it was a fire hazard.This thing looks and feels nice but as soon as you start to use it you will notice how cheap it actually is. Ugh. This brand used to be one of my goto brands. Missed the window for return now they are both dead and not even a months old. Oooooooh my lanta.

Constant values hold nicely as long as power-in is sufficient. I initially tried to adjust CC with no load on device. Just 10 amp DC range on VOM. For the short duration I put the meter across power-out (less than a second) it appeared that I was drawing max current well above 10 amp. The device survived that mistake so it has good short circuit protetion. Once I loaded the output both CV and CC were easily adjusted and accurate. Very little if any drift as long as power demand stays within reasonabe limits

Good unit, all 10 worked. Can easily output 50W, 35v/1.4A with 14v input.Size is smaller from previous units i purchased (30 units). See pic of this smaller unit. I wasnt expecting this and must modify a bracketFuse has been removed, wires are lighter gauge and moved in slightly from board edge.I would like to see wires moved in farther from board edge..make me think they can short to aluminum substrate. Maybe use a connecter with no wires

Does output the rated power. BE CARFUL using power supplies and high cell batteries. If you do not resist the input flow of current the current ripple will blow them up violently. If using a power supply turn your amps down and bring them up slowly. If using high output batteries use a resistor or anti spark connectors. lipos will blow them with no current protection. Hear my warning.

This module just failed on me after 3 years in-use. Not bad for the price, but I’ve moved on to a more industrial module that I can rely on (at 10x the cost). Even after failure this held its output voltage, but the current would drop out momentarily causing my POE devices to malfunction.Be aware that at 48v / 60w this unit gets too hot to touch. My IR gun reads about 150°F. I would advise active cooling.I’m using this in a custom DC-DC UPS that powers my network devices from a Li-Ion battery pack during a power outage.

These are perfect for the DIY'er that wants to run 100 watt LEDs in their car. It gives me 36 volts @ 3 amps all day (or night) long without overheating. I'm quite pleased. Well built, and on time shipping tops it off. I'm ordering 2 more as soon as I post this review. Excellent value!

TL;DR -- The CC pot didn't work from the start and the board failed within minutes of testing.Open circuit testing. Set to 30v output. Voltage was stable with 12v in. Seemed promising. Powered down.Connected 200w 12 ohm load with current meter in series. Current was an unstable 2.5 amps. Turned CC pot in both directions. No change in output current.Open circuit set to 24v. Turned CC all the way cw. The CV adjust was cw lower, ccw raise which is counter intuitive.Attached load. Expected 0amps (or something low) but got 4 amps. Shut is down. Disconnected load. Checked open circuit voltage. Voltage reg stopped working and the open circuit Vout was 2.5v. CV pot had no effect after.So, no current control out of the box. Board failed with 96w output using a load on the output.Flux was still on the board (expected for an $8 board). Solder joints looked good. Board was an A1 revision.Anyway, if you buy this board I hope you have better luck than I did. Good luck.